Starter circuit controlling means



Patented May 25, 1954 UNITED STATES ATENT OFFICE STARTER CIRCUITCONTROLLING MEANS John M. Hart, Anderson, Ind.

Application February 20, 1951, Serial No. 211,901

1 claim. 1

This invention relates to means for controlling the starter circuit of amotor vehicle equipped with a radionic receiver, and by this termradionic receiver" it is intended to encompass not only an ordinary carradio which receives only, but a mobile radio telephone which bothreceives and transmits, as in police cruisers, military vehicles,taxicabs, and service trucks.

Heretofore, there has been no provision to prevent starting theautomobile or the like with the switch of the radionic receiver turnedon. It has of course been customary to provide for automatic breaking ofthe electronic receiver circuit upon opening of the ignition switch tostop the motor, but re-closing of the ignition switch for car startingif the radionic receiver switch has been left turned on while the car isstanding, will again complete the circuit of the radionic receiver. Notonly does this throw an additional load on the battery when starting butit may be otherwise very undesirable at that particular time to have thereceiver blast forth.

The present invention aims to overcome the above mentioned undesirableconditions by making novel provision for preventing closing of thestarter circuit while the switch of the radionic receiver remainsclosed, thus prohibiting use of the starter until this switch is opened.

A further object of the invention is to accomplish the above end byproviding an auxiliary starter switch which must occupy closed positionwhen the usual starter switch is closed, in order to cause operation ofthe starter, and by providing electrical means controlled by theradionic receiver switch for effecting open position of said auxiliarystarter switch to prevent starter operation, if an attempt be made tostart the car with the electronic receiver turned on.

A still further object of the invention is to provide for automaticbreaking of all required circuits when the ignition switch is turned oiand for rie-establishing any circuits necessary to carry out the desiredfunctioning, upon 17e-closing of the ignition switch.

With the above and other objects in View that will become apparent asthe nature of the invention is better understood, the same consists inthe novel form, combination and arrangement of parts hereinafter morefully described, shown in the accompanying drawing, and claimed.

In the drawing:

Figure 1 is a diagram showing the proper normal relation of elementswhile the car is standing idle,

Figure 2 is a similar view showing that the starter may be operatedwhenever the electronic receiver switch occupies open position, and

Figure 3 is a similar view showing that the starter cannot be operatedwhile the electronic receiver switch is closed. V

A conventional starter motor is indicated at 5 on the drawings, and amanually closable switch for said starter is shown at 6. This switch maybe of push-button or any other type and in the present disclosure may beconsidered as controlling a relay 'I to bring the starter 5 intooperation.

The coil and distributor of an ignition system are indicated at 8 and 9,respectively, and the ignition switch is shown at I0.

An electronic receiver is indicated at II in the form of a mobile radiotelephone and its oiand-on switch is shown at I2.

The car battery isindicated at I3, the main lead cable at I4, and theground strap or cable at I5.

All of the elements 5 to I5, inclusive, may be considered asconventional. Likewise the wire I6 from lead I4 to ignition switch I0,the wire t II from switch I0 to coil El, the shunt wire I8 from the wireIl to switch I2, the wire I9 from switch I 2 to the radionic receivingmeans Il, and the ground 20 from said receiving means II, may beconsidered as conventional or at least indicative of the conventional.The same is true of the wire 2l leading to starter switch 6 from thewire I6.

An auxiliary starting switch 22 is provided, said switch 22 being of aself-opening normallyopen type provided with an electromagnetic device23 for closing it when energized. Adjacent this switch 22 and preferablymounted or encased therewith as indicated by the dotted lines 2t, is aSeli-closing normally-closed switch 25, this switch 25 being providedwith an electromagnetic device 2'5 for opening it when energized. A wire21 leads to switch 25 from wire Il, and a wire 28 extends from saidswitch 25 to the closing device 23 of switch 22, a ground for thisdevice 23 being shown at 23. A wire 30 extends from the starter switch 6to the auxiliary starter switch 22, and a wire 3| extends from thisswitch 22 to the relay 1. A wire 32 leads from the output side of theswitch I2 to the opening device 26 of the switch and a ground for thisdevice 2t is shown at 33.

Normally with the car standing idle, if the receiver Il has been turnedoff, the various elements stand as seen in Figure 1 with all circuitsbroken. Upon closing of the ignition switch I0,

with the receiver switch I2 still open (see Figure 2) the ignitioncircuit through I4, I6, III, I'I, 8 etc., will be completed as indicatedby some of the arrows in Figure 2. Also the circuit for the closingdevice 23 of switch 22 will be completed through 21, 25 and 2B, therebyclosing switch 22 which, it will be recalled, is an auxiliary startingswitch. Now, still referring to Figure 2, it will be seen that thecircuit of starter 5 will be completed upon closing of the starterswitch 6, the current then flowing to said starter switch through I6 and2| and from said starter switch through 39, 22, and 3l.

It will be seen from the above that the starter 5 may be operated andthe car started if switch I2 be open at the time of making the attempt.However, if this switch I2 be in closed position at the time of makingan attempt to start the car, the situation depicted in Figure 3 willexist. From this View it will be seen that upon closing of the ignitionswitch I0 with lswitch I2 closed, the circuit of the switch-openingdevice will be completed through I8, I2, and 32, thereby opening theswitch 25 and preventing the olosing device 23 from closing theauxiliary starter switch 22. Therefore, when the starter switch 6 isclosed, the starter cannot operate, as the current must flow throughboth starter switches 5 and 22 in order to cause starter operation. 1tis thus impossible to operate the starter 5 and start the car with the4switch I2 of the radionic receiver il in closed position, accomplishingthe desired end.

It is to be understood that the diagrammatic nature of the drawing andthe description thereof are to a large extent illustrative rather thanlimiting, and that wiring systems other than that shown could well beemployed within the scope of the invention as claimed.

What is claimed, is:

In a device of the kind described, an automobile starting motor, a relaycontrolling the current through said motor, a source of current supplyconductively connected to said motor through said relay, an ignitionswitch, a starter switch, conductive connection means connecting oneterminal of each switch in multiple to said relay, a normally opencircuit closer, a conductive connection between said relay and oneterminal of said circuit closer, a conductive connection between theother terminal of said circuit closer and the starter switch, saidcircuit closer including a normally deenergized magnet, a con ductiveconnection between said relay and the remaining terminal of said circuitcloser, a normally closed switch, a conductive connection between oneterminal of said magnet and one terminal of the normally closed circuitcloser, the remaining terminal of said magnet being grounded, said lastcircuit closer including a normally deenergized magnet closing saidcircuit closer when energized, one terminal of the last mentioned magnetbeing grounded, a normally open conductive connection between the otherterminal of the last magnet and the other terminal of the last mentionedcircuit closer, means to close said last connection, a branch conductivecircuit connecting the last mentioned circuit connection and theremaining terminal of the ignition switch and an ignition deviceconnected to said branch circuit.

References Cited in the file 0f this patent;

UNTED STATES PATENTS Niunhe' Name Date 1,293,569 Stien Feb. 4, 19191,814,950 Moscato July 14, 1931 2,283,785 Boling May 19, 1942 2,449,338Summerset Sept. 14, 1948

